[Williams]

It still seems to me they might stop him if all the moderates combine.

[TexasFreeper2009]

Time is running out for the moderates to combine.

They have to do it before Florida votes, or it will be too late.

And last nights results virtually guaranteed that none of them will be dropping out anytime soon.

It is especially important that both Rubio and Bush stay in the race until after Florida.

If Trump gets even 1 vote more than anyone else in Florida, he gets ALL of Florida’s delegates, and it’s game over.

[TontoKowalski]

I don't think the establishment CAN combine to beat him. One of the exit poll questions discussed on CNN last night concerned the hit Rubio took after the debate.

It seems that, of those who abandoned Rubio in the final days, a lot went to Kasich and a lot went to Trump. Cruz got a smaller, but not insignificant share.

I actually give that some credence. Kasich had a surge at the end. Less discussed is that Trump beat his poll numbers by about 5%. Cruz also outperformed his polls, I think.

Apparently, although we tend to lump them together, the voters don't consider the establishment candidates to be interchangeable.